Počet záznamů: 1

.i.Utricularia./i. carnivory revisited: plants supply photosynthetic carbon to traps

  1. 1.
    0329176 - BC-A 2010 RIV GB eng J - Článek v odborném periodiku
    Sirová, Dagmar - Borovec, Jakub - Šantrůčková, H. - Šantrůček, J. - Vrba, Jaroslav - Adamec, Lubomír
    Utricularia carnivory revisited: plants supply photosynthetic carbon to traps.
    Journal of Experimental Botany. Roč. 61, č. 1 (2010), s. 99-103 ISSN 0022-0957
    Grant CEP: GA MZe(CZ) QH81012
    Výzkumný záměr: CEZ:AV0Z60170517; CEZ:AV0Z60050516
    Klíčová slova: aquatic carnivorous plants * stable isotope labelling * carbon exudation * microbial community * Utricularia australis * Utricularia vulgaris
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 4.818, rok: 2010

    Carbon (C) allocation in rootless Utricularia has not been studied previously. There is uncertainty about the functional and ecological benefit of the trap-associated microbial community and the potential role played by C exudation in enhancing plant–microbe interactions. A 13C-labelling experiment was conducted to determine C allocation between plant tissues of increasing age and trap fluid in two Utricularia species. Both species allocated majority of newly fixed C into shoot apex (46.1 +- 8.6% in U. vulgaris and 56.1% in U. australis). Carbon allocation decreased rapidly with increasing age of the shoot. In the trap-bearing shoot segments, ratio of C exuded into trap fluid to that in plant tissues increased markedly with age—in oldest segments twice as much newly fixed C was allocated into the trap fluid than the plant tissue. Overall, a significant amount of the newly fixed C, approximately 25% in both species, was allocated to trap fluid.
    Trvalý link: http://hdl.handle.net/11104/0175280